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  <h1 class="title">简介</h1>
  <p class="para">
   <a href="http://gearman.org" class="link external">&raquo;&nbsp;Gearman</a> is a generic application framework for farming
   out work to multiple machines or processes. It allows applications to complete tasks in parallel,
   to load balance processing, and to call functions between languages.  The framework can be
   used in a variety of applications, from high-availability web sites to the transport of database
   replication events.
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   This extension provides classes for writing Gearman clients and workers.
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